Santos has been suspended from competition for one year, retroactive to Dec. 18. She was also fined $2,500 of her $66,000 purse. The results of her quick knockout win over Yamanaka have been turned into a no-contest.

UFC President Dana White said that Santos will be stripped of her title and that it likely results in the end of the female 145-pound division in Strikeforce. There weren’t many challengers left for Santos and the promotion will likely focus on the bantamweight division as its sole female fighting weight class.